package thread;

import java.util.ArrayList;

public class Test {
    public static void main(String[] args) throws InterruptedException {
        ArrayList <Integer> list = new ArrayList<>();
        Thread t1 = new Thread(){
            public void run(){
                for (int i = 0; i < 1000; i++) {
                    synchronized (list){
                        list.add(i);
                    }
                }
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                for (int i = 0; i < 1000; i++) {
                    synchronized (list){
                        list.add(i);
                    }
                }
            }
        };
        t1.start();
        t2.start();
        Thread.sleep(1000);
        System.out.println(t1.getName()+":正在执行t1方法");
        System.out.println(t2.getName()+":正在执行t2方法");

    }
}
